AppDefend Application Firewall Overview

Transcription

1 AppDefend Application Firewall Overview May 2014 Stephen Kost Chief Technology Officer Integrigy Corporation

2 Agenda Web Application Security AppDefend Overview Q&A Oracle EBS Web Architecture AppDefend Benefits

3 About Integrigy ERP Applications Oracle E-Business Suite Databases Oracle and Microsoft SQL Server Products Services AppSentry ERP Application and Database Security Auditing Tool AppDefend Enterprise Application Firewall for the Oracle E-Business Suite Validates Security Protects Oracle EBS Verify Security Ensure Compliance Build Security Security Assessments ERP, Database, Sensitive Data, Pen Testing Compliance Assistance SOX, PCI, HIPAA Security Design Services Auditing, Encryption, DMZ You

4 Integrigy Published Security Alerts Security Alert Versions Security Vulnerabilities Critical Patch Update July x Oracle E-Business Suite XSS Critical Patch Update July x Oracle E-Business Suite security configuration issue Critical Patch Update October x 2 Oracle E-Business Suite security weaknesses Critical Patch Update July 2008 Critical Patch Update April 2008 Critical Patch Update July 2007 Oracle 11g x 12.0.x x Issues in Oracle RDBMS Authentication 2 Oracle E-Business Suite vulnerabilities 8 vulnerabilities, SQL injection, XSS, information disclosure, etc. 11 vulnerabilities, SQL injection, XSS, information disclosure, etc. Critical Patch Update October x, Default configuration issues Critical Patch Update July 2005 Critical Patch Update April 2005 Critical Patch Update Jan 2005 Oracle Security Alert # x x x Oracle 8i, 9i, 10g SQL injection vulnerabilities Information disclosure SQL injection vulnerabilities Information disclosure SQL injection vulnerabilities Buffer overflows Listener information leakage Oracle Security Alert # x, SQL injection vulnerabilities Oracle Security Alert # x, Buffer overflow in FNDWRR.exe Oracle Security Alert # Oracle Security Alert # , 11.0.x Multiple vulnerabilities in AOL/J Setup Test Obtain sensitive information (valid session) No authentication in FNDFS program Retrieve any file from O/S

6 SQL Injection Explained Attacker modifies URL with extra SQL nd_user_pkg.updateuser('operations',%20's EED',%20'welcome1 Oracle EBS executes appends SQL to the SQL statement being executed SQL executed as APPS database account Example changes any application account password This vulnerability was patched as part of Oracle Security Alert #32

7 Cross Site Scripting (XSS) Illustrated A Attacker enters malicious JavaScript into job application description field to for example automatically approve resume B HR Manager opens job application in Oracle and script executes in browser C Script calls an Oracle EBS URL in a hidden frame to execute some EBS functionality

8 Cross Site Scripting Sample Attacks <script>alert(0)</script> <img src="x:x" onerror="alert(0)"> <iframe src="javascript:alert(0)"> <object data="javascript:alert(0)"> <isindex type=image src=1 onerror=alert(0)> <img src=x:alert(alt) onerror=eval(src) alt=0> with(document)alert(cookie) eval(document.referrer.slice(10)); (É=[Å=[],µ=!Å+Å][µ[È=-~-~++Å]+({}+Å) [Ç=!!Å+µ,ª=Ç[Å]+Ç[+!Å],Å]+ª])() [µ[å]+µ[å+å]+ç[è]+ª](å) </a onmousemove="alert(1)"> data:text/html,<script>alert(0)</script> %C0%BCscript%C0%BEalert(1)%C0%BC/script%C0%BE <ScRIPT x src=//0x.lv?

9 Cross Site Scripting References XSS Cheat Sheet WSC Script Mapping Project OWASP XSS Reference

10 Oracle EBS Security Vulnerabilities Oracle E-Business Suite security vulnerabilities fixed between January 2005 and January

11 Oracle EBS Web Vulnerabilities Fixed ~60 SQL Injection in web pages ~70 Cross Site Scripting ~15 Authorization/Authentication ~5 Business Logic Issues

12 OWASP Top 10 Oracle EBS Mapping Ten top security risks commonly found in web applications listed by level of risk A1: Injection A2: Cross Site Scripting (XSS) A3: Broken Authentication and Session Management A4: Insecure Direct Object References A5: Cross Site Request Forgery (CRSF) A6: Security Misconfiguration A7: Insecure Cryptographic Storage A8: Failure to Restrict URL Access A9: Insufficient Transport Layer Protection A10: Unvalidated Redirects and Forwards High Risk Medium Risk Low Risk

13 WASC Threat Classification Web Application Security Consortium Comprehensive list of threats to the security of a web site attacks and weaknesses Attacks Abuse of Functionality Brute Force Buffer Overflow Content Spoofing Credential/Session Prediction Cross-Site Scripting Cross-Site Request Forgery Denial of Service Fingerprinting Format String HTTP Response Smuggling HTTP Response Splitting HTTP Request Smuggling HTTP Request Splitting Integer Overflows LDAP Injection Mail Command Injection Null Byte Injection OS Commanding Path Traversal Predictable Resource Location Remote File Inclusion (RFI) Routing Detour Session Fixation SOAP Array Abuse SSI Injection SQL Injection URL Redirector Abuse XPath Injection XML Attribute Blowup XML External Entities XML Entity Expansion XML Injection XQuery Injection Weaknesses Application Misconfiguration Directory Indexing Improper File System Permissions Improper Input Handling Improper Output Handling Information Leakage Insecure Indexing Insufficient Anti-automation Insufficient Authentication Insufficient Authorization Insufficient Password Recovery Insufficient Process Validation Insufficient Session Expiration Insufficient Transport Layer Protection Server Misconfiguration High Risk * Medium Risk * Low Risk * No Risk

14 Inherent Risks with Package Software Structure and vulnerabilities within the application are well known and documented An attacker knows exactly what to expect and how the application is structured No probing or reconnaissance of the application is required Fatal attack can be one URL Allows for easy automated attacks

16 Oracle EBS R12 DMZ Configuration Oracle R12 Application Server Java Server Pages (JSP) 8,000 JSP pages OA Framework (OA/RF.jsp) 11,600 pages Client Browser https Apache OC4J Core Servlets 30 servlet classes APPS Database Web Services Servlets 70 servlet classes Oracle Forms 4,000 forms All Oracle E-Business Suite environments include ALL modules (250+) and ALL web pages (20,000+) even if modules are not installed, licensed, or configured. Many security vulnerabilities exist in unused modules.

17 URL Firewall Oracle EBS R12 DMZ Configuration Oracle R12 Application Server Java Server Pages (JSP) 8,000 JSP pages 90 Client Browser https Apache OC4J OA Framework (OA/RF.jsp) 11,600 pages Core Servlets 30 servlet classes Node Trust Level APPS Database Web Services Servlets 70 servlet classes Oracle Forms 4,000 forms Proper DMZ configuration reduces accessible pages and responsibilities to only those required for external access. Reducing the application surface area eliminates possible exploiting of vulnerabilities in non-external modules. (See MOS Note ID )

18 OWASP Top 10 Oracle DMZ Config A1: Injection Oracle DMZ Partial A2: Cross Site Scripting (XSS) A3: Broken Authentication and Session Management A4: Insecure Direct Object References A5: Cross Site Request Forgery (CRSF) A6: Security Misconfiguration A7: Insecure Cryptographic Storage Oracle DMZ Mostly A8: Failure to Restrict URL Access Oracle DMZ Complete A9: Insufficient Transport Layer Protection A10: Unvalidated Redirects and Forwards High Risk Medium Risk Low Risk

19 Another Layer of Security Web Application Firewalls (WAF) are specialized firewalls designed to detect and prevent web application attacks by analyzing the HTTP web requests. Prevents common web application attacks Detects and blocks SQL injection, XSS, and known vulnerabilities in widely used web applications Often implemented as an appliance Dedicated appliance used to protect all web applications in an organization May be required for compliance such as PCI-DSS PCI-DSS 2.0 requirement 6.6 requires use of a WAF or periodic reviews

20 Web Application Firewall Shortcomings Must be heavily customized for Oracle EBS Rules, application profiles, and learning must be developed, tuned, and tested by you Unable to block unused Oracle EBS modules Due to the complexity of the Oracle naming and design, very difficult to implement blocking of EBS modules with WAF rules Significant cost, effort, and skill required to deploy WAFs are usually an appliance that must be deployed and the learning curve for configuring and operating an enterprise WAF is steep

22 Integrigy AppDefend for R12 AppDefend is an enterprise application firewall designed and optimized for the Oracle E-Business Suite R12. Prevents Web Attacks Detects and reacts to SQL Injection, XSS, and known Oracle EBS vulnerabilities Limits EBS Modules More flexibility and capabilities than URL firewall to identify EBS modules Application Logging Enhanced application logging for compliance requirements like PCI-DSS 10.2 Protects Web Services Detects and reacts to attacks against native Oracle EBS web services (SOA, SOAP, REST)

23 AppDefend Oracle R12 Support Oracle E-Business Suite 12.0.x 12.1.x 12.2.x (under development) All supported R12 operating systems Operating Systems Sun SPARC Solaris 8, 9, 10 HP PA-RISC HP/UX 11.0, 11.11, IBM AIX 4.3.2, 4.3.3, 5L, 6L Linux x86 (Oracle Enterprise Linux 4, 5, Red Hat Enterprise Linux AS/ES 3, 4, 5, SuSe 8, 9, 10)

24 AppDefend AppDefend and Oracle R12 Oracle R12 Application Server Java Server Pages (JSP) 8,000 JSP pages Client Browser https Apache OC4J OA Framework (OA/RF.jsp) 11,600 pages Core Servlets 30 servlet classes APPS Database Web Services Servlets 70 servlet classes Oracle Forms 4,000 forms AppDefend runs within the Oracle E-Business OC4J containers as a servlet filter and monitors all incoming requests and out-going responses. Being in the OC4J container, AppDefend can access all session state, attributes, error messages, and the database.

25 AppDefend Virtual Patching Eliminate risk and exploitation of the security bug by blocking access to the vulnerable code Integrigy analyzes the Critical Patch Update (CPU) Delivers pre-defined rules for all CPU web bugs Rules may be at the page or field level to block known vulnerabilities

26 Integrigy Oracle CPU Analysis For each quarterly Oracle CPU, Integrigy performs an analysis and updates the AppDefend rule set to include virtual patch rules for all external and internal web vulnerabilities Sample from Integrigy CPU Analysis

27 Deep Request Inspection tm Analyze all user provided input to identify and block malicious input Intelligent checking of ALL parameters, user input Uses best practice libraries for XSS and SQL injection detection - OWASP AntiSamy - OWASP ESAPI Malicious input may be detected, blocked, or sanitized

28 Application Logging and Auditing Log and audit key application and security events beyond Oracle R12 current capabilities Any page, action, parameter, session attribute may be logged or audited PCI logging includes all sessions, responsibilities, and potentially card number access through the application Log data can be sent to external systems such as ArcSight

29 AppDefend Supported Applications Oracle E-Business Suite 12.0.x 12.1.x Oracle PeopleSoft Oracle Fusion Applications Under development Under development

30 AppDefend Features Rules and configuration files use JSON notation Configuration XSS and ESAPI detection fully configurable Support for shared APPL_TOPs Dynamic reloading of configuration files no restarting of the application server required Flexible formatting and destinations Logging and Alerting Resiliency Destinations include files, syslog, , database Files with periodic or sized-based rotation, size limits Syslog with support for major logging platforms (ArcSight, envision, QRadar, etc.) Fail open or closed upon internal errors Fail open or closed upon startup or configuration errors

31 AppDefend Processing Updates Thresholds Exceeded Match Request & Response Rules path inclusion arguments operators Match Actions No Match Next Rule Log file Syslog Database

32 AppDefend SQL Injection, XSS, web attacks AppDefend R12 Permit Rule Oracle R12 Application Server Java Server Pages (JSP) 8,000 JSP pages JSPs filtered by module rules Client Browser https Apache OC4J OA Framework (OA/RF.jsp) 11,600 pages Core Servlets 30 servlet classes OAF pages filtering based on functions Servlets filtered Database by module rules APPS Web Services Servlets 70 servlet classes Oracle Forms 4,000 forms Web services filtered based on service names Oracle Forms blocked for external access AppDefend allows access to only permitted Oracle EBS modules based on a group of white-listed modules. Individual files may be permitted also. Web page and OA Framework customizations are supported

33 AppDefend Arguments ebs.function_id ebs.function_name ebs.resp_id ebs.resp_name ebs.user_id ebs.user_name ebs.user_signon_name request.attribute.<name> request.attributes.names request.auth_type request.body_length request.character_encoding request.content_length request.context_path request.cookie.<name> request.cookies.names request.file_extension request.file_name request.header.<name> request.headers.names request.is_secure request.line request.local_addr request.local_port request.method request.parameter.<name> request.parameters.combined_size request.parameters.get_names request.parameters.get_values request.parameters.names request.parameters.put_names request.parameters.put_values request.parameters.values request.path_info request.path_translated request.protocol request.query_string request.remote_addr request.remote_host request.remote_port request.remote_user request.scheme request.server_name request.server_port request.servlet_path request.servletcontext.<name> request.session_id request.uri request.url response.content response.content_length response.header.<name> response.header.names session.attribute.<name> session.attributes.names

34 AppDefend Operators beginswith byterange contains notcontains endswith equals exists greater greatereq ingroup notingroup inlist notinlist ipmatch notipmatch less lesseq regex within notwithin

35 AppDefend Actions Log Redirect Block Pause Sanitize Stop DoNothing Generates a log entry or alert to a file, syslog, Redirects the request to a specified full URL or relative URL for the site such as the Oracle EBS error page Block the request by returning the specified HTTP error code such as 403 Forbidden Pause the request for the specified number of milliseconds perhaps to slow down a brute force attack Sanitize one or all parameters and headers in the request to prevent XSS, HTML injection, or SQL injection Stop the processing of all subsequent AppDefend rules. The Stop action is useful to minimize AppDefend analyzing static request such as images, etc. This action will do nothing as an action

37 OWASP Top 10 AppDefend AppDefend A1: Injection AppDefend A2: Cross Site Scripting (XSS) A3: Broken Authentication and Session Management AppDefend A4: Insecure Direct Object References AppDefend A5: Cross Site Request Forgery (CRSF) AppDefend A6: Security Misconfiguration A7: Insecure Cryptographic Storage AppDefend A8: Failure to Restrict URL Access AppDefend AppDefend A9: Insufficient Transport Layer Protection A10: Unvalidated Redirects and Forwards High Risk Medium Risk Low Risk